A MgCo_(2)O_(4)based electrode is employed as a novel electrocatalyst material for the electrochemical oxidation of methanol.The binder-free and carbon-free spinel MgCo_(2)O_(4)nanorod-like structures were grown direc...A MgCo_(2)O_(4)based electrode is employed as a novel electrocatalyst material for the electrochemical oxidation of methanol.The binder-free and carbon-free spinel MgCo_(2)O_(4)nanorod-like structures were grown directly on nickel foam(NF)using a facile and cost-effective co-precipitation method followed by calcination.Cyclic voltammetry(CV),chronoamperometry(CA)and electrochemical impedance spectroscopy(EIS)tests were used to study the electrocatalytic performance of the MgCo_(2)O_(4)/NF electrode.The MgCo_(2)O_(4)/NF electrode exhibits higher electrocatalytic activity,a lower onset potential and superior stability when tested as an electrocatalyst for methanol electrooxidation.The high surface area and large pore volume of MgCo_(2)O_(4)with a mesoporous structure offer higher numbers of active sites for methanol electrooxidation.The higher catalytic activity and stability,along with the facile and scalable synthesis route are promising features for the use of cheap non-Pt based catalyst materials for methanol electrooxidation.展开更多
基金supported by the National Research Foundation of Korea(NRF)funded by the Ministry of Education(NRF 2016R1D1A1B03930855)+1 种基金the Ministry of Science,ICT and Future Planning(NRF-2016R1C1B2008694)supported by Nano-Material Fundamental Technology Development(2016M3A7B4909370)through the National Research Foundation of Korea(NRF),funded by the Ministry of Science,ICT and Future Planning.
文摘A MgCo_(2)O_(4)based electrode is employed as a novel electrocatalyst material for the electrochemical oxidation of methanol.The binder-free and carbon-free spinel MgCo_(2)O_(4)nanorod-like structures were grown directly on nickel foam(NF)using a facile and cost-effective co-precipitation method followed by calcination.Cyclic voltammetry(CV),chronoamperometry(CA)and electrochemical impedance spectroscopy(EIS)tests were used to study the electrocatalytic performance of the MgCo_(2)O_(4)/NF electrode.The MgCo_(2)O_(4)/NF electrode exhibits higher electrocatalytic activity,a lower onset potential and superior stability when tested as an electrocatalyst for methanol electrooxidation.The high surface area and large pore volume of MgCo_(2)O_(4)with a mesoporous structure offer higher numbers of active sites for methanol electrooxidation.The higher catalytic activity and stability,along with the facile and scalable synthesis route are promising features for the use of cheap non-Pt based catalyst materials for methanol electrooxidation.
